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USB Flash Drive Speed Tests - VID = 58f (Alcor Micro Corp.), PID = 6335

Welcome to Speed Tests Web site for USB Flash Drives.
In this page, you can find the speed test results of USB flash drives, made by USBDeview utility. USBDeview make this test by writing a large file into the USB flash drive, and then reading back the same file to getting the read speed. The speed is calculated and displayed in Megabytes per second (MB/Sec). Be aware that all these tests are made by making a sequential read and write operations of a single file. When you use multiple small files, you'll probably get much lower read/write performances.

If you want to test the read/write speed of your own USB drives and share the results with other people, you can follow the instructions in this page: Test and publish the speed of your USB flash drive.

There is also a summary page, which contains a summary of speed tests for USB drives that accumulated 5 speed tests or more.

Search other USB flash drives:

Some Remarks

To more easily compare the speed of USB flash drives, you can filter the list according to drive size group:

1 GB or less 2 GB Group 4 GB Group 8 GB Group
16 GB Group 32 GB Group 64 GB Group Larger than 64 GB

Notice that the USB devices of last size group (above 64 GB) are not really flash drives. they are external hard disk drives plugged to USB. I originally created this Web site for flash drives, but because some people already submitted the speed test results of external USB disks, I added a group for them too.

Product NameVendor NameDrive SizeVIDPIDRead SpeedWrite SpeedSubmitter
16GB SD - Team Brand, Class 6 (Via Transend USB)Alcor Micro Corp.14.90 GB58f633517.70 MB/Sec10.66 MB/Secbenryanau
2GB uSD (Taiwan Budget/No Class) via Transcend USB-SDAlcor Micro Corp.1.86 GB58f633515.24 MB/Sec5.44 MB/Secbenryanau
ADATA C802 8GBAlcor Micro Corp.0.06 GB58f63356.68 MB/Sec3.39 MB/Sec 
Apacer 2GB SD 60x high speedAlcor Micro Corp.1.90 GB58f63358.86 MB/Sec3.05 MB/Secc784294
Ebay 32GB "SAMSUNG" microSDHC Class 10 $17Alcor Micro Corp.29.62 GB58f633517.43 MB/Sec7.17 MB/Secc784294
Pretec SDHC 32 GB Class 16Alcor Micro Corp.30.92 GB58f633516.00 MB/Sec3.75 MB/SecClass 16!!! :(
Pretec16GB SecureDigital cardAlcor Micro Corp.15.15 GB58f633517.27 MB/Sec7.11 MB/Sec 
Promaster 2GB SD (Code 5306) through a Transcend Single Flash>USB ReaderAlcor Micro Corp.1.83 GB58f633516.20 MB/Sec8.47 MB/SecZork
Samsung EVO microSDXC U1Alcor Micro Corp.59.59 GB58f633517.86 MB/Sec14.00 MB/Secemwu88
Sandisk SD 16GB ULTRAAlcor Micro Corp.14.84 GB58f633516.48 MB/Sec6.44 MB/Sec 
SanDisk Ultra microSDHC class10 u1Alcor Micro Corp.29.71 GB58f633517.43 MB/Sec9.47 MB/Sec 
SD/MMC Card Reader USB DeviceAlcor Micro Corp.0.00 GB58f63353.86 MB/Sec0.78 MB/Sec 
SDHC Mustang 16G Le Mans class 10Alcor Micro Corp.15.01 GB58f633519.20 MB/Sec12.74 MB/Secafterdark
Single Flash Reader USB DeviceAlcor Micro Corp.14.83 GB58f633517.32 MB/Sec9.03 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.14.45 GB58f633519.04 MB/Sec7.54 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.188.07 GB58f633562.72 MB/Sec31.35 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.15.00 GB58f633517.20 MB/Sec6.89 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.1.88 GB58f633516.72 MB/Sec5.37 MB/Secsugar0079
Single Flash Reader USB DeviceAlcor Micro Corp.3.68 GB58f633515.55 MB/Sec7.41 MB/Secqbart
Single Flash Reader USB DeviceAlcor Micro Corp.1.87 GB58f633517.55 MB/Sec5.86 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.15.01 GB58f633519.10 MB/Sec11.51 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.29.71 GB58f633520.46 MB/Sec12.82 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.7.62 GB58f633517.70 MB/Sec6.16 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.29.53 GB58f633519.40 MB/Sec8.24 MB/Seckazarin1alex@g
Single Flash Reader USB DeviceAlcor Micro Corp.15.11 GB58f633515.74 MB/Sec6.42 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.2.83 GB58f633517.46 MB/Sec7.77 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.3.79 GB58f633513.98 MB/Sec8.02 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.7.38 GB58f633516.73 MB/Sec5.94 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.14.83 GB58f63358.50 MB/Sec3.92 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.122.87 GB58f633558.90 MB/Sec10.82 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.1.89 GB58f633510.18 MB/Sec7.33 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.7.61 GB58f633518.34 MB/Sec9.19 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.7.41 GB58f633515.60 MB/Sec4.56 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.7.41 GB58f633515.45 MB/Sec4.72 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.1.83 GB58f633518.55 MB/Sec8.92 MB/Sec 
Single Flash Reader USB DeviceAlcor Micro Corp.15.16 GB58f633516.99 MB/Sec7.03 MB/Sec 
Toshiba MicroSDHC 8GB class4Alcor Micro Corp.7.41 GB58f633518.11 MB/Sec8.40 MB/SecUwing
Transcend 16GB microSDHC Cl10Alcor Micro Corp.14.94 GB58f633518.79 MB/Sec13.93 MB/Sec 
Transcend 4GB SDHC Class6 though a Transcend Single Flash>USB ReaderAlcor Micro Corp.3.72 GB58f633513.23 MB/Sec6.93 MB/SecZork
Transcend 8GB microSDHC Cl6Alcor Micro Corp.7.46 GB58f633518.73 MB/Sec10.74 MB/Sec 
Transcend Class 6 SDHC (8GB)Alcor Micro Corp.7.46 GB58f633519.56 MB/Sec6.78 MB/Sec 
Transcend reader with 16GB Transcend SD Card Class 6Alcor Micro Corp.14.97 GB58f633515.34 MB/Sec6.68 MB/SecUmpal
Transcend SDHC 8GB class6Alcor Micro Corp.7.46 GB58f633514.54 MB/Sec7.93 MB/Secuwing
Transcend SDHC Ultimate 16GB Class 10Alcor Micro Corp.15.01 GB58f633517.33 MB/Sec11.87 MB/Sec 

Total number of records: 44